Clutch and brake control mechanism



suitable hoisting iii-.e

Application i'ieilepeziiber iii,

,.f m com* e lriiovcii lliat l eiiiic, f iiizeii oi' rile ing ai L il liee and i" .eo certain rien c Cliieli and. ralie Co which 'Clie following a epe 'This invention appci'tains vices of the general lype Wliicli roiiiiiioiily eiiiployeii ro-day in association with nii machines. lue'n loading cericee comp we invented. e reineiis in oicliiiaril)`y a leerling alzip or liiicliet ,adapted when ni e posiiin lo'e'erei'l io lie ground level to receive lo lie iinxeil miie oemig connected ivitli ftlie skip or, liicl'e wlieieliy to rame tlie saine into an iipivzirrlly anal (loiriiiiagdcl;7 alie-- charging" posi on.

The present iiii'iiiigioii liaa` ivo (o priinai y with the .iiieaiie for controlling the `aii l loiif'ei'iiig oi5 a loading: ilevice ol ilie class ist ilcscribcil. Usually ilrii'e shalt' is iililirxefgl as Elie driving iiieiiili :il

iiili tl lioisiiiig means or ca' to elle s, in ii'lieieln' to i-aiae lli@ latef and subsequently io lower il lo iie ejriniiicl level posiioii, it ie ciielioiiiary lo iirei'iile in .coli- Election .riili lic aaiil fliiiigi' iiiffiiiliei' a. iiiaiiiiaily 'oieralile clair-li ixiecliaiiieai ailapi a ialilo winding' iiii to ilie when il; is il' i 1 rr 'oiiiaif;T to :ii/ir;

irol ilile brak-fx adapted oy irliieli i1. sairl lnelie iiif'el): slow iii iii. oi lie i" cliitrli iiriirei irl @relay i ilcrivc so Siaiil i iiieialiei in neil to loading ile- Jan. 20, 1920.

Serial 'o. i243,

"Le l lie brake. The control member is ail; io se -L itioiied in a neutral pognlioii, so 'o Speak? viiereby neither the clutch iiiecliania or bralie device aesoeiaed therewiilli is ope: ated.

lilly .,.oii also involves certain peculiar iiiei whereby automatic operation` ofi lie Sain rontrol iiiecliaiiisiii for the cliitcli and brake devices may ta ie place, and lui'- lieriiioie l utilize peculiar ineens adapted io ac aiioziialicaily to hold the control leor iiieiiilier in eiilier brake applying or clutch operating positions.

. .lily iiireiiioii also resides iii other detaili` oiz coiie'lriiceion wliirli will appear iiioie 'fullyy ae liis description proceeds.

A .fue accoiiiiliaiilyiiig drawings:-

irc l is a rien' showing' in general on? Y- i drinn paring iiiixer ivitlra loan.- t applied iiei'ello, and illustraiir-.g coiirroliaccliaiiisiii in accordance with the invention.

Figi'. is a eeclioiial View illustrating in mille cliiaioii' 'tlie various parie of the coni'rol ziiecliaiiisii..

Il ie a i'roii elevation olf tlie coiii'iol aiocliaiiieiii parte' ae ijieweil Wli. a tlie iiiixing iiiacliiiic seen iii eide elei'alioii5 tlie loading; slizil'o being` lirol-reii away mit illusratril in ii` iipii'arrl position as when actiii'il on lw liiiocl-z-on, parte for the clutch lliQLl lib fer View of the clutcii opg lci'r-ineed iii tilie construction illus- :n Figs, l ro El inclusive.

is a iiioiliiieil amiptaiioii of .he ini'eiiion,

inge, e and i are views similar Figs.

-1.- l zf ll d o ie a derail .ieix oi tiie maire mii lc-rer used iii the iiiodilie adapta- .icii of die iiifeiiiioii.'

in l ilie iiiixiiig iiiacliiiielillustrated oi a conventional type employing the niixiia iglriim lic distributing chiite B,

ai *i* .e loaa'liiig skip C. The loeffliiig Skip f ai'iteil io be raised angl lowered lie iiieriiiiieiitality oi olie or more .ile ifiiiiiiecii iis l ataclierl one end to lie Skip and passing ore` ay pr ley or pul- 2 on ille raiiieworl; o? ie ii'iacliiiie, ii'liicli'saiil ealile 0i* cali s lead t0 a on a aiiitfalilf. ilialt carrying a large drinn llbout (fr-nin l Winds Q has a brake band 8 passing upon a shaft G, said shait (y beto 7. lt sulhces a cable 5 leading to a drum sce Fig. 2, the equi y'alent ot ing designated G in Fic to state that the shail't o or 5", as the case may be, is a driving' shalt adapted to cause Windingl up o't a cable or anv similar d riving action whereby the skip C may be raised into an inclined position dlschargg'ing into the mixing drinn an r which the skip may he lowered b v a braking act-ion in respect to the sha'lt G on which will he provided a suitable brake drum '2'.

t is not material to the present invention whether the same be used in connection with a driving member or shaft 6 or lia which is adapted to raise and lower a loading skip. since it will be obvious that a con trol mechanism ot' the 'type ot the invention is susceptible oi cooperation with a drivingv member, like or equivalent to the shaft 6, and which is adapted to perform anv similar work to that olI the raising' and lowering of a skip constituting a load which the driving' member is adapted to handle.

Referring' particularlyy to liigs. and 3. it will be observed that the brake wheel 7 tlierearouml, one end of said band being att-ached 4to ay bracket 9 secured to the framework ot' the machine, the Opposite end ot' the band being secured by a bolt 10 to the main operating lever 11..

he operating lever 11 is pivoted to the bracket v9 at 11"L and at its lower end the lever 11 has a handle while at its upper end the lever is 'formed with a slot adapted to receive the reduced end portion l?a of a. clutch operating' lever 12. The level? 1:: is also pivoted to the bracket S). at the point 121. one arm otl the lever 12 engaging in the slot ot the lever 11 as previously suggested and the other arm ot' the lever 1:5` being` formed with the clutch operating` hook 12C adapted to shift Suitable clutch devic on the shat't o' into engagement with the of the brake Wheel- 7 which wheel with .the connected winding drum 1.3 is loose on the shaft't G. Through 'the action of the clutch devices operated by the clutch arm ot.' thel lever 12 the shaft (i is adapted to be operatively connected with the parts 7 and 13 so as to drive the drum 13 in a, direction. to wind thereon the cable 5, and thus cause raising n'iovement of the loading skip C. `When the skip C has reached its uppermost position the inner pivotal portion ot' thc .skip actuates a knockout bar 1l which knock-out bar is connected at its lower end pivotallv at il with the clutch lever 12, in such a manner as to shit't the clutch lever to diseugl'an'e thc clutch devices trom the brake wheel 7.

here is provided in association with the main lever 11 a. curved link 15 one end ot attacl'ufd pivotallv to the lever 11 which is etween the handle ot the lever and the point of pivotal support ll"L "The other end vment with the.brake wheel 7 of the link l5 is secured to a coiled spring 16 and the point of attachment ot' the link to said coil spring is such that by movement ot' the lever 11 the point of pivotal connection between the' link 15 and the lever may be shifted to opposite sides of a plane interpivotal support of the lever .11 and the point of its connection with the spring' 16. In other words, more simpl expressed, the point of connection of the link 15 with the lever 11 can be moved on opposite sides of a dead center, that is adapted to be established by alinement of the point of connection ot' the lever 11 with the bracket 9, and the point ot' attachment of the link 15 and spring 1G.

e general mechanism above described operatesas follows: When the user ot' the. machine desires to raise the skip the level' 11 is pushed into substantially the position shown in Fig. 2 until the point of connection of the link 15 and the lever 11 is at the left side of the dead center position previously referred to. The result of the foregoing' action is that the spring 16 acts on the lever 11 through the link 15, to hold the lever 11 in the position stated. The moving' or" the lever 11 to the position mentioned creates a. looseness of the-'brake band S in respect to the brake wheel 7 and simultaneously rocks the horizontal clutch lever 12 so as to cause engagement of the clutch devices actuated by said lever with the brake wheel, thereby establishingan operative connection between the shaft 6 which is constantly driven, and the parts 7 and 13 loose thereon. The cable 5 is now wound upon the drum 13 causing the winding' ot the'skip hoisting' cables 1 about the drum or drums 3, tivo of which are usually provided.

nce the lever 11 is moved to the position mentioned, the operator can release his hold upon the lever because of the action ot the spring.r 1G thereon. `When the skip C reaches its dumping or dischargingposition it automatically actuates the knock-out bar 14 so as to shift the cllitch lever 12 and disengage the clutch devices thereof from the brake Wheel 7. The shifting of the clutch lever 12 in this manner forces the upper end of the main lever 11 inward toward the bracket 9, tilting said leverr 11 so that its outer end is carried to the right of the dead center position described above, the sprintT 16 automatically actinf,T instantly to hold the lever 11 in its new position as well as to exert an outward pull on said lever sufficient to cause the brake band 8 to take rmlv `in engageand thereby the skip C is stopped and held in charging position until released. y

vTo release and lower the skip the operator has to ,grasp the handle of the lever 11 and torce the same toward the bracket 9 to relieve the pull on the brake band 8 as much neessess desired, the skip C being adapted to be red slowly or fast depending upon the amount or pressure exerted on the lever 11 jor the purpose stated. v 5, Under certain conditions it is desirable once the snip C has been raised that it be permanently held in its raised position for the tiniebeing. For this purpose I provide locking cam lever-17 pivoted to the main lever 11 and having a cam 17 adapted to be swung into impinging engagement wit i the frame ot the machine so as to positively hold the lever 11 in the position thereot required vto maintain the brake band .8 firmly with the brake wheel 7. When so positioned the locking lever 17 'prevents liability of accidental lowering of the ship C once raised., and the device 17 is especially advantageous when it is wished maintain `the skip in elevated position as dining a period otI transportation of the mixing machine, or nonnse of the machine; also the part 17 prevents untimely engagethe clutch. i issing new to the modified adaptation the invention illustrated by-Figs. to 8 fsw isive, it is deemed unnecessary to dee 'the various parts specifically since the instruction and operation ot this mecharisin may set forth and will be understood readily in view oic the explanation of the described construction. In Figs.' 5 to 7 tiere will be seen one or more of the eleoi the driving member -or shaft 6, the winding drum. 13, the brake wheel 7i, the breite band S', the clutch devices 18 for coni? the ,shaft 6 with the parts 7 and 13., 'the main lever 11', the link 15 connecting with an. oiistanding arm 19 secured to the lever l1. the spring 16 attached to le linlr The main lever 11 has its lower end extended laterally and engaged in a slot in an arm ot the brake band actuating lever 90. the latter being pivoted to a bracket rame oiitlie machine and having e on ti i "s other end connected `with an end of the o band S. the opposite end of the brake L S being secured by a bolt 21 to the In clret may be that the main lever 11 in modi 'instruction is directly enrg'agcd with t ever which actuates the brake hand in this instance instead of bcing dire y engaged with a lever which actuates the clutch devices as in the first described adaptation of the invention. Likein the modified adaptation the lever l1 in carrying out the reversed arrang'emcnt` has a yoke directly coni-iecting teli devices 1S, whereas in the ons lotion said lever was cted vvitn the brake band innils,

if oi the various parts is same in tlielimodiiication ment of the lever 11 rearwardly toward the part 7 engages the clutch devices 18 with the brake wheel 7 and relieves the b 'alte band from braking engagement with the wheel 7 through downward tilting of the lever 20. The outward movement of the lever 11 `causes a reverse action. namely a release o vthe clutch devices and an applica-- tion of thel brake mechanism.

It is of course to be understood that the main operating lever 11 or 11 is common to the clutch and brake devices and is broadly speaking` a main control member. Likewise the shaft 6 or 6B, as the case may be, is a driving member the load whatever it may be, under the control of the main control member.

Having thus described the invent-ion, what is claimed as new is 1. In control mechanism of the class described, the combination, of a driving member, control inea-ns therefor comprising a clutch for connecting said driving member with the work, a brake governing the action ot said drivinginember, main contro] member, operating connections intermediate said control member and the brake and clutch,

land a spring' so connected with said main controlmember as to automatically act thereon to hold it in its brake applying or clutch controlling positions.

2. ln control niechanisnrol the class scribed. the combination. of a driving ineinber. control means therefor comprising a clutch for connecting said driving; member with the work, a brake governing' the action ot' said-driving member. a main control member. operatirm` connections inter rodi-atc said control member and the brake and clutch. anda single means ciiertive antonmticallv tor holding the control member in brake applying or clutch controlling positions and separate means tov positively lock the -control member in one of said positions.

'rln control mechanism olf the class described. thc combination` oi a driving' member, control mea-ns therefor comprising a clutch for connec ingr said driving; member with the worlnn brake governing* the .action of said driving' member, a main control mem ber, operating connections intermediate said control member "and the brake and clutch. and a spring' so connected with said main control member as to automatically act thereon to hold it in its brake :i'aplying clutch controlli-nc; control member positions.

el. ln control mechanism oit t scribed. the combination. of d ber, control means therefor ie. winHy men pissing a adapted to handle clutch for connecting said driving member with the work, a brake governing the action of said driving' member, a main control member, operating connections intermediate .said control member and clutchja pivotal support the control member, a spring. a link connected at one end with said spring and at its other end with said co points ot sides of the pivotal member whereby the control member may be shifted into brake applying or clutch applying' positions and the said spring will auton'iatically act to hold said member in eit er ot' such positions once assumed thereby.

5. In control mechanism ot' the class described, the combination of a drivin, menibei', a clutch for connecting said member with the ,vvoi'k, a brake to act upon said member when the clutch is released, a main support of operating lever, connections intermediate said lever and the brake. and connections intermediate said lever and the clutch so arranged that when the brake is applied the clutch may be released and 4when the clutch is effective the brake may be inetilective, a pivotal support toi' said lever, and means to hold the leverineither of its positions above stated consisting of a link connected with the lever at one side oi its pivotal support, a spring connected with the link at the other side of the ijiivotal suppoi't of the lever, the point ot' pivotal connection of the link with the levnbeing shitfable to opposite sides 0l' the dead center line' established y a plane intersecting` the pointot attach` ment of the spring and link and the point of pivotal support ot' the lever, wherebyr the spring may act to hold the lever in either clutch applying or brake applying positions. lever control mechanism comprisincr a main control lever, a support, a pivotal connection between .said lever and said support, devices adapted to be operated by said lever, and means for holding the lever in either of two operating positions consisting of a spring, a link attachedat one end to said spring with the point of attachment at one side of the pivotal support ot the lever, and a connection between said link and the lever located at the other side of the pivotal support. one of the link or lever parts being` arched whereby the point of pivotal connection between the link and levermay be shifted to opposite sides ot' a dead Vcenter line established by a plane intersecting' the point ot' pivotal support ot' thc lever, the point of attachment of the lever with the springand the point of connection of the link with the lever. v

7. ln control mechanism of the class described, the combination of' a driving meinber, a. clutch for connecting said member with the work, a brake to act upon said member when the clutch is released, amain operating lever, connections intermediate lever and the brake, and connections inn i: mediate said lever and the clutch so arranged that when the brake is applied the clutch may be released and when the clutch is ellective the brake may be ineffective, a pivotal support for said lever, and means 'to hold the. lever in either of its positions above stated consisting of a link connected with the lever at one side of its pivotal support, a spring' connected with the link at the other side ofthe pivotal support of the lever, the point of pivotal connection of the link with the lever being shittable to opposite sides of the dead center line established by a plane intersecting' the point of attachment oi tic spring and link and the point of pivotal support of the lever, whereby the spring may act to hold the ever in either clutch applying or brake applying positions, and a lockingT member cooperating wit-hsaid lever to lock the saine positivelyy in aosition maintaining' the brakeapplied.

S. In controlling' mechanism ot the class described, the combination of a driving men'iber, clutch and brake parts for respectively connecting' the driving member with the work and governing the action of ysaid driving' member. a main control lever opera tive 'v connected with said parts for controlling' the saine so that they may be alternatively cl'lective, and means adapted to be operated by said driving member to shift the main control lever and render inactive one of said parts which may be effective under (he control oi the lever. v

l). In control mechanism of the class described. the combination ot a driving inem- "ber, clii'tch and brake parts for respectively 'connecting` the driving,r member with the work and Lgoverning' the action of said driving' member, a main control lever operatively connected with one ot' said last named parts 'or direct operation ot' the saine, a secondary lever connected with the other of Said clutch and brake y y with said main control lever,- adapted to be operated b v the driving mein- )er and connected with the secondary lever for shi t'tingsaid lever to thereby actiiate the main control lever so as to affect tl tion ot the clutch and brake parts.

In control mechanism oi the class described. the combination ot a driving,r member, clutch and brake parts for respective] connecting` the driving` member with the work and Ig'overning the action of said driving,r member, a main control lever operatively connected 'with one ot' said last named parts t'or direct operation of the saine. a sccondarv lever connected with the other ot' said cinte-: and brake paitf,`zi.ntl also eon nected with said main control lever, a knockout bar connected with the secondary lever, and means adapted to be operated by the driving member for shifting said knockout bar and thereby rocking the secondary lever in sucha manner as to actuate the main control lever so as to ait'ect the action of the clutch and brake parts.

ll. In control mechanism of the class described, the combination oi a driving member, clutch and brake parts torrespectively connecting 'the driving member with the work and governing the action ot' said driving member, a main control lever operatively connected with one oi" said last named parts for direct operation of the same, a secondary lever connected with the other of said clutch and brake parte, and also connected with said main control lever, a knock-out bar connected with the secondary lever, means adapted to be operated by the driving member for shitting said knockout bar and thereby rocking the secondary lever in such a manner as to mtna'te the main control lever so as to :f iiect the action of the clutch and brake parte, and means automatically operable as an incident to the action o1 the knock-out bar to hold the main con-- trol lever in the position assumed thereby under the-action. of the s'econdai y lever.

12. In control mechanism of the class described, the combination of a driving member, clutch and brake parts for respectively connecting the driving member with the work andl governing the actionof said driving member, a main control lever operatively connected with one ot' said last named parts' for direct operation of the same, a secondary lever connected With the other of said clutch and brakeparts, and also connecte@ with said main control lever, a knock-out bar connected with the secondary lever, means adapted to be operated by the drivand thereby rocking the secondary lever in such a manner as to actuate the main control ing member for shifting said knock-out bar lever so as to affect the action of the clutch I and brake parts, and spring means automatically operable as an incident to the action of the knock-out bar to hold .the main control lever in the position assumed thereby under the'action of the secondary lever, said spring means being likewise adajted to hold both the secondary and main control levers in the positions in which they are disposed previous to the action thereon of the knock-out bar.

In testimony whereof I affix my signature.

ERICH H, LICHTENBERG. 

